US4280453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multicylinder internal combustion engine
Assignee: Individual
•
Filing: 1979-01-23
•
Granted: 1981-07-28
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Expires: 1999-01-23
Abstract
Abstract A multicylinder internal combustion engine with a crankcase secured to a connection flange of the cylinder block and a flywheel at the output end of the crankshaft, the distance between the connection flange and the crankshaft axis corresponding approximately to half the diameter of the flywheel.
Inventors
- 👤 Hans List
- 👤 Othmar Skatsche
- 👤 Josef Greier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:25
CPC Classifications
F; F02; F02F; F02F7/00; F02F7/0065; F02F7/008; F02F7/0002; F02F7/0007; F02B; F02B75/00; F02B75/16; F02B75/18; F02B2075/1804; F02B2075/1816
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
214 words
In a multicylinder internal combustion engine which includes a cylinder block, a crankcase positioned generally below the cylinder block, and a crankshaft extending through the crankcase and rotatable about a central axis; said cylinder block having a generally box-like shape and including integral main bearing means extending downwardly into said crankcase to support the crankshaft; and said crankcase having openings at opposite sides thereof through which the crankshaft extends; the improvements wherein said cylinder block includes a connection flange which extends outwardly along substantially all the sides of said cylinder block, said connection flange having a continuous surface which faces said crankcase, said crankcase includes a generally rectangular upper portion means which encompasses the portions of said cylinder block below the connection flange, a counter flange which extends outwardly along substantially all the sides of said upper portion means which is fixedly connected to all of said continuous surface of said connection flange of said cylinder block, and as an integral portion thereof a flywheel housing extending away from one side thereof, and said crankshaft includes at the end thereof which extends into said flywheel housing a flywheel, the radius of said flywheel being less than the distance between the connection flange of said cylinder block and said central rotational axis of said crankshaft.
Claim 2
Dependent Claim
214 words
In a multicylinder internal combustion engine which includes a cylinder block, a crankcase positioned generally below the cylinder block, and a crankshaft extending through the crankcase and rotatable about a central axis; said cylinder block having a generally box-like shape and including integral main bearing means extending downwardly into said crankcase to support the crankshaft; and said crankcase having openings at opposite sides thereof through which the crankshaft extends; the improvements wherein said cylinder block includes a connection flange which extends outwardly along substantially all the sides of said cylinder block, said connection flange having a continuous surface which faces said crankcase, said crankcase includes a generally rectangular upper portion means which encompasses the portions of said cylinder block below the connection flange, a counter flange which extends outwardly along substantially all the sides of said upper portion means which is fixedly connected to all of said continuous surface of said connection flange of said cylinder block, and as an integral portion thereof a flywheel housing extending away from one side thereof, and said crankshaft includes at the end thereof which extends into said flywheel housing a flywheel, the radius of said flywheel being less than the distance between the connection flange of said cylinder block and said central rotational axis of said crankshaft.
Claim 3
Dependent Claim
74 words
The multicylinder internal combustion engine of claim 1 wherein said connection flange of said cylinder block includes a number of spaced part threaded holes along the length thereof, wherein said counter flange includes a number of spaced apart threaded holes along the length thereof in register with the holes in said connection flange, and wherein threaded bolt means are threaded in each of said registered holes to connect said crankcase with said cylinder block.
Claim 4
Dependent Claim
52 words
The multicylinder internal combustion engine of claim 2 wherein both said connection flange and said counter flange, at least in the corners thereof nearest the flywheel, are aligned in planes which are parallel to a horizontal plane passing through the crankshaft central rotational axis so as to improve transmissions of engine torque.
Claim 5
Dependent Claim
56 words
The multicylinder internal combustion engine of claim 2 wherein said cylinder block is formed so as to include a water jacket zone between the internal cylinder heads and the outer walls thereof, and wherein said connection flange is an integral part of said outer walls at a point along the depth of said water jacket zone.
Claim 6
Dependent Claim
38 words
The multicylinder internal combustion engine of claim 1 wherein said crankcase includes on the side thereof opposite the side nearest said flywheel housing a removable cover plate which, when removed, allows access to the inside of said crankcase.
Claim 7
Dependent Claim
87 words
The multicylinder internal combustion engine of claim 2 wherein said cylinder block includes means forming large-sized bolt holes therethrough near the opposite corners of the wall thereof nearest said flywheel, wherein said crankcase includes near said flywheel housing large-sized bolt holes therein in alignment with said large-sized bolt holes in said cylinder block, and wherein large-sized bolt holes in said cylinder block, and wherein large-sized bolts are threaded in said aligned large-sized holes, whereby the engine torque is transmitted from the cylinder block to the flywheel housing.
Claim 8
Dependent Claim
69 words
The multicylinder internal combustion engine of claim 6 wherein said cylinder block includes means forming additional large-sized bolt holes therethrough near the opposite corners of the wall thereof opposite said flywheel, wherein said crankcase includes on the side opposite said flywheel housing large-sized bolt holes therein in alignment with said additional large-sized bolt holes in said cylinder block, and wherein large-sized bolts are threaded in said aligned large-sized holes.
Claim 9
Dependent Claim
58 words
The multicylinder internal combustion engine of claim 7 wherein said large-sized hole means in both said cylinder block and said crankcase are so positioned that said large-sized bolts therein are aligned in a plane perpendicular to a horizontal plane passing through the crankshaft central rotational axis so as to enhance transmission of engine torque to the flywheel housing.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-07-27 | 1985-01-26 | 1985-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-27 | 1989-01-26 | 1989-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-27 | 1993-01-26 | 1993-07-28 | $7700.00 | Window Closed / Lapsed |